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Make your principles of procedure binding and known: All of the people
involved in your … research project must agree to the principles before the work
begins; others must be aware of their rights in the process.
(Kemmis and McTaggart, 1981, pp. 43-4, reprinted in Hopkins, 1985, pp. 135-6)
1.5. THEORY AND EVIDENCE IN PRACTITIONER
RESEARCH
Now that we have established a set of ground rules and a set of ethical principles it is time to go
on to consider the relationship between theory and evidence in practitioner research. Bassey mentions the
importance of relating research to theory in his rules 3 and 7, where he makes the distinction between
'personal' and 'published' theories.
THEORIES
There is nothing mysterious about a theory. People devise theories to explain observable
relationships between events or sets of events. Traditional scientific theories offer explanations in terms
of causal relationships between events and/or behaviours. Once a theory has been formulated it can be
used to predict the likely outcome when similar sets of circumstances occur. Testing whether these
predictions are correct or not is one way of testing the theory itself. A theory is, then, a coherent set of
assumptions which attempts to explain or predict something about the behaviour of things and events in
the world. A physicist might have a theory which can predict the behaviour of subatomic particles under
certain conditions; an historian might have a theory about the causes of the Industrial Revolution; and an
educational psychologist a theory about the causes of underachievement in inner-city schools. In all these
cases, the theories held by the physicist, historian and psychologist are likely to have been derived from
published accounts of previous research. They might also have personal theories, based on their own
experiences, beliefs and observations. Often what attracts people to one published theory rather than
another is its close match with their own personal ideas and assumptions.
For example, take the commonly held idea that practical experiences enhance and consolidate
children's learning. This idea (or hypothesis) stems from the published theories of the Swiss psychologist
Jean Piaget. Piaget's ideas became popular through documents such as the Plowden Report (Central
Advisory Council for Education, 1967) and the Cockcroft Report (DES, 1982) and are reflected today in
recommendations put forward in various national curriculum documents. For example, attainment target 1
– exploration of science – reads as follows:
Pupils should develop the intellectual and practical skills that allow them to
explore the world of science and to develop a fuller understanding of scientific
phenomena and the procedures of scientific exploration and investigation.
(DES, 1989, p. 3)
In a published account of her work, Virgina Winter explains how this idea, coupled with her own
belief that science teaching should emphasize 'practical, investigative and problem-solving activities', led
her to undertake a systematic appraisal of the science work offered in her school (Winter, 1990, p. 155).
She was particularly interested in the ways in which her pupils acquired 'process skills', that is the
practical skills necessary for them to carry out controlled scientific experiments. She also wanted to find
out about children's perceptions of science, and whether they understood the way scientists worked. In
this example, you can see how public and personal theories can come together to act as a stimulus for a
piece of research.
EVIDENCE AND DATA
In order to compare two rival theories, one needs to gather evidence. It is worth remembering that
showing a theory is incorrect is more important than simply confirming it. In science, falsifying theories
and setting up and testing alternative theories is the principal means of advancing knowledge and
understanding. This is also the case in educational research. As an example of this, let's take a closer look
at Virginia Winter's research.